High-flow diesel exhaust systems for trucks and SUVs. 4" and 5" systems, DPF-back kits, and performance upgrades for maximum power and efficiency.
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Best AP Exhaust catalytic-converter for 2012-2011 Jeep Grand Cherokee Right | Direct Fit | EPA/CARB Compliant | 644225
$922.56
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2012-2011 Jeep Grand Cherokee Left | Direct Fit | EPA/CARB Compliant | 644224
$922.56
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2016-2014 Mazda CX-5 Front | Direct Fit | EPA/CARB Compliant | 641611
$1,877.28
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2012-2011 Ford Taurus Left | Direct Fit | EPA/CARB Compliant | 641601
$1,001.32
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2022-2019 Toyota RAV4 Front | Direct Fit | EPA/CARB Compliant | 641597
$1,051.28
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2020-2015 Jeep Cherokee Front | Direct Fit | EPA/CARB Compliant | 641586
$1,364.46
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2012-2010 Ford Fusion Front | Direct Fit | EPA/CARB Compliant | 641625
$1,854.30
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2017-2010 Chevrolet Equinox Front | Direct Fit | EPA/CARB Compliant | 644223
$1,299.54
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2018-2013 Ford C-Max Rear | Direct Fit | EPA/CARB Compliant | 644217
$443.34
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2002-1998 Toyota Land Cruiser Left | Direct Fit | EPA/CARB Compliant | 645193
$1,180.54
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best DieselTech catalytic-converter | Direct Fit | Stainless Steel | 649053
$2,084.74
Genuine OEM substrates enhance durability, upgraded stainless steel canisters improve durability and resist corrosion, precision-crafted...
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Best DieselTech catalytic-converter for 2010-2008 Ford F-250 Super Duty | Direct Fit | Stainless Steel | 649051
$1,344.18
Genuine OEM substrates enhance durability, upgraded stainless steel canisters improve durability and resist corrosion, precision-crafted...
Frequently Asked Questions
What size exhaust for deleted diesel?
4" is minimum for deleted diesels; 5" is ideal for heavily modified trucks. Larger diameter dramatically reduces EGT and backpressure, crucial when deleting emissions equipment. Straight-pipe or single muffler designs flow best. Note: Emissions deletion is illegal for street use.
Will bigger exhaust help my stock diesel?
Yes! Even stock diesels benefit from 4" turbo-back systems. Expect lower EGT (50-100°F drop), slightly better MPG (1-2), and improved throttle response. Gains increase dramatically with tuning. Larger exhaust is essential foundation for any diesel performance build.
Turbo-back vs DPF-back exhaust for diesel?
Turbo-back systems (from turbo to tip) provide maximum performance by reducing all backpressure. DPF-back systems (behind diesel particulate filter) maintain emissions compliance while improving flow. For stock trucks staying emissions-legal, DPF-back offers best balance of performance and legality.
How much HP does exhaust add to diesel?
On stock diesel engines, exhaust alone adds 10-20 HP. With tuning, the same exhaust supports 50-100+ HP gains by reducing EGT and backpressure. Exhaust is essential before adding power - it's not the biggest power adder itself but enables other modifications to work safely.
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